Wall bed actuating mechanism



E. H. BRIDENBAUGH WALL BED ACTUA'IING MECHANISM April 21, 19%.

.Filed A ril 28, 1954 3 Sheets-Sheet l zmwm A ril 21, 1936. E. H.BRIDENBAUGH v WALL BED ACTUATING MECHANISM Filed April 28, 1934 5Sheets-Sheet 2 fmjenfor EYmew/iBrienau h.

, 1936- E. H. BRIDENBAUGH WALL BED ACTUATING MECHANI SM April 21 3Sheets-Sheet 3 Filed April 28, 1934 In z/enfoz Elmer/1B1) e 3 d)Patented Apr. 21, 1936 UNITED STATES PATENT OFFICE WALL BED ACTUATINGMECHANISM Application April 28, 1934, Serial No. 722,940

14 Claims.

This invention relates to beds of a type arranged for concealed. storagewhen not required for use and for ready extension from such storage tousable position when desired, and has as an ,5 object to provide animproved construction of and arrangement of operative elements in such abed.

A further object of the invention is to provide an improved bedconstruction foldable into a wall v recess or closet.

A further object of the invention is to provide an improved foldable,wall-type bed arranged for storage cooperation with a relatively smallrecess or closet.

A further object of the invention is to provide an improved bedconstruction foldable into vertically-disposed frame position above andextensible into horizontally-disposed frame position from a base framefixed within a wall recess or closet.

A further object of the invention is to provide an improved foldable,wall-type bed arranged for either manual or power actuation.

A further object of the invention is to provide an improved mounting fora foldable, wall-type bed.

A further object of the invention is to provide an improved combinationof a foldable, wall-type bed with supporting means operable to effectextension or retraction of said bed.

A further object of the invention is to provide improved supportingmeans for a foldable, walltype bed operable to transmit limited shaftrotation to effect complete extension or retraction of said bed.

A further object of the invention is to provide improved means forpivotally supporting a foldable, wall-type bed, said means beingoperable through limited shaft rotation to rotate said bed 40 on itspivotal mounting and subsequently impart arcuate motion to said pivotalmounting.

A further object of the invention is to provide improved mounting andactuating means for a 5 foldable, wall-type bed, which means operate topositively limit travel of said bed when in either extreme of its rangeof travel.

A further object of the invention is to provide improved means in amounting for a foldable, wall-type bed automatically engageable andreleasable to positively latch said bed against accidental displacementfrom its folded position.

A further object of the invention is to provide improved meansautomatically operable to eifectively counterbalance the variable momentproduced by arcuate motion of a foldable, wall-type bed relative to itsmounting.

A further object of the invention is to provide improved meansautomatically operable for efiective control of hinged head and footframe sections in a foldable, wall-type bed.

A further object of the invention is to provide an improved, operative,foldable, wall-type bed assembly that is positive and efficient inoperation, arranged for either manual or power actuation, susceptible ofready operative combination with power units or appliances of varioustypes, simple of installation in a minimum of space, and substantiallyunlimited in its adaptability to specificuses and installations.

For an example of power actuating mechanism which is readily combinablewith the present invention, I refer tomy application filedcontemporaneously herewith for improvements in Hydraulic actuatingmechanism.

My invention consists in. the construction, arrangement and combinationof elements hereinafter described, pointed out in my claims andillustrated by the accompanying drawings, in which: 1

Figure 1 is a side elevation of a power-equipped bed installationembodying the principles of the invention, portions of the structurebeing broken away to conserve space.

Figure 2 is an elevation similar to Figure 1 with the power unit removedand certain elements broken away to conserve space and to betterillustrate otherwise concealed construction.

Figure 3 is an elevation similar to Figure 2 illustrating the elementsof the latter figure in folded or retracted relation.

I Figure 4 is a vertical transverse section taken ,on the indicated line4-4 of Figure 2.

Figure 5 is a fragmentary, detail section taken on the indicated line5-5 of Figure 2.

Figure 6 is a plan view of the base frame and counterbalancing mechanismemployed in the invention, bed supporting and actuating elementsconnectible with said base frame being omitted.

Figure 7 is a detail section taken on the indicated line 1-1 of Figure6.

In the construction of the improved bed as shown, the numeral l0designates a bed frame side rail, two of which are employed in spaced,parallel relation, one end of said rail being secured in fixed relationwith and extending perpendicularly from a head frame portion I I and theother end of said rail being secured in like manner to a .foot frameportion I 2, the two frame portions and rails thus cooperating to form acomplete 2 A and rigidly interconnected bed frame. The rails I arepreferably formed with midportions l0 offset beneath the normal topplane of the bed frame, and said rails carry and suitably support aspring assembly I3 which preferably includes longer spring elementsarranged to receive and support the major weight of a bed occupant andshorter spring elements adjacent end portions of the assembly.

The head frame I I is provided with an extension I I' hinged to itsupper margin and arranged a to fold toward and in overlying relationwith a portion of the spring assembly I3, and the foot frame I2 isprovided with an extension I2 hinged to its lower margin and arranged tofold toward and in underlying relation with said spring assembly, therigid portions of said head and foot frames having substantially equalextension on the spring side of and relative to the rails I0 and verylittle extension on the other side of their attachment with said rails,the extension I2 having a length suflicient, when alined with the fixedportion I2, to position the spring assembly I3 at conventional elevationabove a supporting surface, and the extension II having such projectionabove the spring assembly, when alined with the fixed portion I I, asmay be desired in a given design or installation.

Fixed to the rails I0 adjacent and spaced somewhat from the head frameII, frame elements, such as angle blocks I4, project laterally fromopposite sides of said rails, said frame elements being alinedtransversely of the bed frame and being provided withvertically-depending web portions to which are rigidly securedidentical, eccentric gear quadrants I arranged with their toothedmargins directed toward the head frame I I. Registering holes are formedthrough the vertical webs of the elements I4 and through the gearquadrants I5 to receive a shaft I6, thus positioned transversely of thehead end of the bed frame beneath the rails I0.

A suitable base frame I'I including spaced, parallel, upstanding flangesor ribs I8 is fabricated, preferably in skeleton form, of suitableelements, and is arranged with the flanges I3 rigidly interconnected ina spacing somewhat in excess of that separating the rails I0, said frameI! being adapted to be suitably positioned on and secured to the floorof a wall recess, closet, or the like, wherein the bed assembly is to befolded for storage.

Brackets I9 are provided on and extend laterally from forward portionsof the flanges I8 to support pins 20 whereon levers 2| are pivoted foractuation through vertical arcs, said levers 2I being formed with yokedupper portions 2I' between the arms whereof are received theassemblies-of elements I4, I5, the shaft I6 engaging through holes insaid yoke arms to pivotally link the bed frame with the base I'I.

Disposed longitudinally of the frame I! in spaced parallelism with theshaft I6 and. journaled for rotation in suitable bearings 25 carried infixed relation by the flanges I8, an actuating shaft 26 is mounted justabove the upper margins of said flanges I8, said shaft being providedwith identical gear quadrants 21 fixed on each end thereof coplanar withthe corresponding gear elements I5, in spaced relation with the latterand with their toothed margins directed, when the bed is in openposition, toward said elements I5.

Pivotally mounted on fixed pins 28 extending oppositely from the flangesI8 adjacent andbeneath and forwardly out of vertical alinement with endportions of the shaft 26, pairs of spaced levers rise on opposite sidesof each of the gear quadrants 21, the inner lever of each pair,indicated at 29, being curved to pass about and over the shaft 26,rearwardly thereof, and the outer lever of each pair, indicated at 30,being formed with a large central web apertured for free passage of saidshaft therethrough. The upper ends of the levers 29 and 36 are formedwith registering holes wherein is mounted a pin 3| positioned, when thebed is in open position, in the same horizontal plane with and spacedrearwardly of the shaft I6, said pins 3I and shaft I6 being pivotallyinterconnected by means of links 32 to preserve the spacingtherebetween.

A gear unit 33 is mounted on each pin 3| for free rotation relativethereto, each said unit comprising an eccentric marginal portion engagedby and adapted to mesh with the corresponding gear element I5 and aconcentric marginal portion engaged by and adapted to mesh with thecorresponding gear quadrant 21, the junction between said marginalportions being formed as a notched offset 34.

With the arrangement thus far described, it is obvious that, referringto Figure 2, rotation of the shaft 26 in a counterclockwise directioncarries the gear quadrant 21 on each end of the said shaft in thecorresponding direction, which motion acts to rotate each unit 33 aboutits pin 3I in the opposite direction, thereby actuating the gearelements I5 to rotate the bed frame assembly about its pivotal mountingon the shaft I6 through a vertical arc upwardly and into folded relationwithin the recess or closet containing the base frame H.

To move the shaft I6 rearwardly into the recess or closet subsequentlyto the pivotal motion f the bed frame about said shaft, and to providemeans automatically operable to latch the movable assembly againstaccidental displacement from folded position, the web portion of eachlever 36 is formed with an arcuate slot 35 concentric with the shaft 26and extending ninety degrees from the longitudinal axis of said lever ina rearward and downward direction and slightly less than ninety degreesin a forward and downward direction from said axis, and each gearquadrant 2'! is provided with a pair of spaced rollers 36, mounted forfree rotation on spindles projecting perpendicularly from the outer faceof said quadrant in position to engage within and move through portionsof the corresponding arcuate slot 35, said rollers being spaced ninetydegrees apart and so arranged as to position the forward of said rollersin end engagement with the forward portion of its slot 35 when the bedis in open position, the rearward of said rollers consequently havingless than ninety degrees to travel to effect end contact with therearward portion of said slot. With the arrangement just abovedescribed, when the bed assembly is actuated and moved into foldedposition, the rollers 36 travel freely through their respective portionsof the slot 25 until the bed frame has traveled almost ninety degrees ofarc, at which time contact is effected between the rearward roller andthe corresponding end of the slot 35, which contact acts, throughcontinued rotation of the shaft 26, to move the paired, linked levers 29and 36 about their common pivot, swinging the upper ends of said leversand the pin 3| supported thereby rearwardly of the recess or closet,and, by virtue of the links 32, drawing the shaft I6 and all elementsmounted thereon, including the bed frame assembly, rear- 'wardly intosaid recess or closet.

The rearward-endof the slot 35 has an arcuate notch offset toward theshaft 26 to receive the "rearward of the rollers 36 when the levercarrying said slot is moved eccentrically relative tosa-id shaftand'rollers,'the engagement of said roller within said notch acting as alatch to securelyhold the assembly in folded relation save when reversemotion is imparted to the shaft '26.

To positively limit arcuate travel of the linked levers 2| and 30,thereby limiting .movement of the bed frameassembly relative to the baseframe I! and wall recess or closet, a link '22 is pivotally secured atone end to a rearward portion ofeach ba-se'fiange 1-8 and risesforwardly from such connection to overlapping relation of its free endwith that portion of the corresponding lever 30 above the slotted webportion of the latter.

The free end of the link 22 is formed with an L-shaped slot 23 disposedwith its longer member approaching the horizontal and its shorter memberdirected upwardly toward the pin 3|, which slot slidingly embraces a pinor roller element 24 projecting in fixed relation with and laterallyfrom the lever 30, so that end engagement of the slot 23 with saidelement 24 acts to positively limit arcuate travel of the lever 30 ineither direction, and, through the link 32, correspondingly limitarcuate travel of the lever 2|,

the longer member of said slot 23 being so disposed and having suchlength as to position said lever 2| somewhat forwardly of the verticalwhen the bed frame is in open position and somewhat rearwardly of thevertical when the said frame is in folded position, the weight of thebed frame elements thereby acting to retain said lever 2| againstaccidental displacement from either of its extreme positions,intentional displacement of said lever requiring an intial upwardimpulse applied to the weight supported thereby.

The shorter member of the slot 23 acts as a latch to hold the bed frameactuating elements in open or extended frame position, since uponengagement of the element 24 with the forward end of the slot 23, theshorter member of said slot is positioned in potential embracingrelation with and above said element 24 and automatically moves intosuch embracing relation therewith under the influence -of gravity actingon the .link 22 to engage-said element 24 and prevent arcuate travel ofthe lever 30 in either direction, as clearly illustrated in Figure 2.

To release the latching engagement between the element 24 and link 22for bed-folding actuation of the operating elements, the link 22 must bemoved upwardly about its fulcrum to bring the element 24into the longermember of the slot 23, which may be automatically accomplished by meansof a depending extension on the free end of said link 22 terminating ina beveled extremity positioned in the path of the rollers 36, theforward of said rollers engaging said beveled extremity as said rolleris moved rearwardly of the arcuate slot through theagency of the shaft26 and lifting the free .end of said link 22 for release of the latchingeffect on the element 24, thereby permitting subsequent actuation of thelevers 30 and 2! in the manner previously described.

A further limitation of rotation of the bed frame in a folding directionabout the shaft I6 is provided by the offset notch 34 of the unit 33,which offset engages against the foremost of the rollers 36 to preventfurther relative travel between the meshing elements 2-1 and 33 when thebed frame has reached its vertical position.

It is of course obvious that rotation of the shaft 26 in a clockwisedirection will act to reverse the cycle above described and extend thebed assembly from folded position within its recessor closet to extendedusable position.

To automatically position the hinged head and foot frame portions II andI2 and to maintain said portions in parallel, substantially verticalrelation irrespective of the relative position of the other bed frameelements, a drag link 31 is positioned adjacent and beneath each of therails it and is mounted for free reciprocation parallel with said railsin a slide bearing 38 carried by an adjacent rail portion 10'. Theforward end of each link 31 pivotally supports one end of a relaitivelyflexible spring link 39, the forward end of which latter pivotallyengages .a rigid element -of the foot frame portion l2. The rearward endof the link 31 is pivotally engaged by one end of a relatively flexiblelever '40, which latter rises past operative engagement with a fulcrum4| fixed to the rigid head frame portion I l to pivotal engagement ofits other end with a short link 42 behind .said head frame, said shortlink 42 being .pivotally connected with a rigid element of the headframe portion l An operating link 43 pivota-lly connects the midportionof the drag link 31 with a :bracket 44 extending laterally from thelever 2.! below the pivotal connection of said lever with the shaft 16and acts, as the bed assembly is moved to folded position, to move thedrag .link rearwardly of its rail l0 and fold, through the spring link.39 and lever 40, the hinged frame portions l I and 12' toward the bedframe proper .and into the relative positions shown in Figure 3,unfolding motion .of the bed assembly acting through. the same agenciesto extend the hinged frame portions :into .alinement with theirrespective cooperating fixed frame portions.

Since arcuate travel .of the bed frame assembly produces .a variablemoment which reaches its maximum as the said assembly reaches itshorizontal position, it is desirable to provide .means effective tomaintain the torque load on the shaft 26 reasonably constant duringactuation of said assembly, one such means being illustrated inoperative combination with the bed assembly and hereinafter described.As best shown in Figure 6, fixed 'pins '45 rise in parallel, spacedrelation from rigid elements of the base frame I1 adjacent each end ofthe latter and support bell-crank assemblies comprising each a longerarm 46 and a shorter arm 4! for actuation of said arms through parallelhorizontal arcs. The bell-crank assemblies :are arranged in oppositionon their respective pins 45 with their longer arms 46 divergingforwardly of the frame I! to pivotally support alined plunger elements48 slidably engaging within opposite ends of .a tubular housing '49,which latter is thus positioned and supported independently of and formotion relative to the base frame IT. The plunger elements 48 are urgedapart by means of expansive coil spring elements 50 loosely mountedwithin the housing 49 and each bearing at its inner end against a stopplate 5| freely slidable within said housing, said stop plates beingadjustably interconnected by means of a coupling bolt 52 havingoppositely threaded ends operative engaging axially through said plates,an angular boss on the bolt 52 between the engaged plates 5| providingfor tool engagement of said bolt and consequentadjustment of the springpressure exerted formed in the housing 49 to permit of such adjustment.Travel of the plunger elements 48 outwardly of the housing 49 is limitedby means of adjustable stops 53 carried in the free ends of radial arms54 extending from the bell-crank assemblies in position for endengagement of said stops with a fixed link 55 interconnecting the pins45.

Flexible connections, such as cables or chains 53, are fixed at one endeach to outer extremities of the bell-crank arms 41 and extend therefromforwardly of the base frame 11, under and partially about pulleys 51fixed adjacent outer, forward corners of said base frame, and upwardlyfrom said pulleys to attachment of their other ends in fixed relationwith frame elements rigidly secured to the rails Ill rearwardly of theshaft It, the point of such attachment being in substantially the samehorizontal plane as, and rearwardly of, the shaft I6 when the bedassembly is in extended position.

It is readily apparent that as the bed assembly is moved from folded toopen position, rotation of the bed frame about the shaft l6 exertstension on the flexible connections 56 which acts to rotate thebell-crank arms 41 forwardly of the frame H, such rotation moving thearms 46 inwardly to compression of the spring elements 50 as the bedframe is lowered, such compression being progressive and proportioned tothe mo-. ment produced by the descending bed frame so as tosubstantially counter-balance said moment and leave a substantiallyuniform torque load on the shaft 26. The spring elements 50 remain undercompression so long as the bed is extended in open position and act toaid return of the bed assembly to its folded position, the force exertedby said spring elements decreasing as the arms 46 move outwardlyrelative to the housing 49.

One end of the shaft 26 is preferably extended beyond th bed actuatingelements and is formed with an angular section for convenient connectionwith manual or power means whereby rotation may be imparted to saidshaft, it being immaterial in the instant invention what shaft actuatingmeans may be employed, one such means in the form of anelectrically-driven, hydraulic transmission unit being illustrated at 58in Figure 1 in operative relation withthe shaft 26 and anchored by meansof an apertured lug 59 fixedly engaging a pin 3i) rising from the baseframe ll.

While the bed assembly is preferably arranged for operation throughactuation of the shaft 26, it is obvious that force may be manuallyapplied directly to the bed frame to effectively move the latter betweenits extended and folded positions, the counterbalancing effect of thearrangement provided for that purpose minimizing the amount of forcerequired for effective actuation of the assembly.

At 62 in Figure 4 is indicated in dotted lines a conventional hand leverarranged for operative association with an angularly sectioned end ofthe shaft 26, which lever may be employed in place of the power unit 58for actuation of the bed mechanism or may be utilized in engagement withthe opposite end of the shaft 26 to supplement said power unit. With thebed frame suitably counterbalanced, said frame may be actuated betweenits extreme positions through rotation of the shaft 26 produced byapplication of manual power to said lever $2, or the said frame may bemanually moved between horizontal and vertical positions and the said1ever'62 employed for extension on the plungers 48, an opening beingpreferably or retraction of the bed frame axis relative to the closet orrecess, the specific manner in which power is applied to the shaft 26 orbed frame assembly in no way altering or modifying the operativerelation of the actuating elements previously described.

A shield plate 6| is preferably mounted on outer of the links 32 incovering relation with the gear elements l5 and 33 to prevent catchingof bed clothing or operators fingers between said gear elements.

Since many changes, modifications and variations in the specific form,construction and arrangement of the elements shown and described may behad without departing from the spirit of the invention, I wish to beunderstood as being limited solely by the scope of the appended claimsrather than by any details of the illustrative showing and foregoingdescription.

I claim as my invention 1. In a wall bed, a bed frame pivotally mountedfor actuation about a transverse axis, means pivotally supporting saidaxis for limited arcuate motion thereof, and actuating means engagingsaid frame and axis and progressively operable to successively rotatesaid frame about said axis and to vary the position of the latter.

2. In a foldable wall bed having a bed frame pivotally mounted foractuation through a vertical are between open and folded positions and 1frame actuating means including a rotatable operating element, anactuating element operable by and concentric with said operatingelement, a lever pivoted eccentrically with and adjacent said operatingelement and arcuate guide means fixedly carried by said lever innormally concentric relation with said operating element in position tobe engaged by and traversed by said actuating element, meansautomatically operable to latch said bed frame in and against accidentaldisplacement from its folded position, said means comprising an endlimit of said arcuate guide means positioned for engagement by saidactuating element as said bed frame approaches closed position, whichend engagement acts to swing the guide-supporting lever into eccentricrelation of said arcuate. guide with said operating element,

and a notch adjacent the end limit of said arcuate guide opening intoand offset inwardly of said arcuate guide in position to be moved intolatching relation about and over said actuating means during eccentricdisposition of said arcuate guide relative to said operating element.

3. A foldable wall bed comprising a bed frame pivotally mounted foractuation through a vertical arc, means engaging said'bed frame operableto rotate the latter relative to' its mounting, and supplemental meansengageable for actuation by said first means adjacentone limit of saidbed frame actuation and operable to vary the position of said pivotalframe mounting.

4. A foldable Wall bed comprising a pivotally mounted bed frame, meansoperable to rotate said frame relative to its mounting, and supplementalmeansoperable through engagement with said first means adjacent onelimit of said frame rotation to vary the position of said framemounting.

5. A foldable wall bed comprising a pivotally mounted bed frame and bedframe supporting means progressively operable to vary the position .ofsaid pivotal frame mounting and to rotate said frame relative thereto;together with actuating means engaging said supporting means and frameoperable toeifect rotation of the latter and vary the frame mountingposition adjacent one limit of said frame rotation.

6. In a wall bed, the operative combination with a pivotally mounted bedframe of frame supportingmeans progressively operable to vary theposition of said pivotal frame mounting and to rotate said framerelative thereto, and actuating means engaging said supporting means andframe operable to effect rotation of the latter and vary the framemounting position adjacent one limit of said frame rotation.

7. In a wall bed, a bed frame pivotally mounted for actuation througheccentrically-related arcs and frame supporting means progressivelyoperable to actuate said frame successively through such arcuateoperative range; together with actuating means .engaging said supportingmeans and operable to effect actuation of said frame progressivelythrough the full range of its arcuate travel.

8. In a wall bed, a bed frame pivotally mounted for actuation in anorbit about a transverse axis, means pivotally supporting saidaxis forlimited travel thereof in an arcuate orbit, an operating element ineccentric relation with said frame and axis orbits, connections betweensaid operating element and frame operable to transmit actuation of theformer to effect rotation of the latter about its axis, and supplementalconnections between said operating element and axis operable to effectarcuate travel of the latter adjacent one limit of the bed frameactuation. 9. In a wall bed, a bed frame pivotally mounted for actuationin an orbit about a transverse axis, means pivotally supporting saidaxis for limited travel thereof in an arcuate orbit, an operatingelement in eccentric relation with said frame and axis orbits,connections between said operating element and frame operable totransmit actuation of the former to effect rotation of the latter aboutits axis, and supplemental connections engaging said axis and actuableby said first connections adjacent one limit of the bed frame actuationto effect travel of said axis.

10. In a wall bed a bed frame pivotally mounted for actuation in anorbit about a transverse axis, means pivotally supporting said axis forlimited travel thereof in an arcuate orbit, an operating element ineccentric relation with said frame and axis orbits, intermeshing gearelements interconnecting said operating element and frame and. operableto transmit actuation of the former to effect rotation of the latterabout its axis, and supplemental connections engaging said axis andactuable by one of said gear elements adjacent one limit of the bedframe actuation to effect travel of said axis.

11. In a wall bed, a bed frame pivotally mounted for actuation in anorbit about a transverse axis, means pivotally supporting said axis forlimited travel thereof in an arcuate orbit, an operating element ineccentric relation with said frame and axis orbits, intermeshing gearelements interconnecting said operating element and frame to transmitactuation of theformer to effect rotation of the latter about its axis,and eccentrically-pivoted lever means engaging said axis and actuable byone of said gear elements adjacent one limit of the bed frame actuationto effect travel of said axis.

12. In a wall bed, a bed frame pivotally mounted for actuation in anorbit about a transverse axis, a base frame, means pivotallyinterconnecting said axis and base frame for limited travel of theformer in an arcuate orbit, an operating element rotatably mounted onsaid base frame in eccentric relation with said bed frame and axisorbits, intermeshing gear elements interconnecting said operatingelement and bed frame to transmit rotation of the former to effectrotation of the latter about its axis, and eccentrically-pivoted levermeans carried by said base frame in engaging relation with said axis andactuable by one of said gear elements adjacent one limit of the bedframe actuation to effect travel of said axis.

13. In a wall bed, a bed frame pivotally mounted for actuation in anorbit about a transverse axis, a base frame, means pivotallyinterconnecting said axis and base frame for limited travel of theformer in an arcuate orbit, an operating element rotatably mounted onsaid base frame in eccentric relation with said bed frame and axisorbits, intermeshing gear elements interconnecting said operatingelement and bed frame to transmit rotation of the former to effectrotation of the latter about its axis, lever means pivoted to saidbaseframe eccentrically with said operating element and rising adjacentthe latter to link connection of its upper end with said axis, anarcuate guide carried by said lever means in concentric relation withsaid operating element, and actuating means in fixed relation with thegear element carried by said operating element engaged within andadapted to traverse said guide means to endcontact therewith adjacentone limit of the bed frame actuation for operation of said lever meansto effect travel of said axis.

14. In a wall bed, a bed frame pivotally mountfor actuation in an orbitabout a transverse axis, a base frame, lever means pivotallyinterconnecting said axis and base frame for travel of the former in anarcuate orbit, an operating element rotatably mounted on said base framein eccentric relation with said bed frame and axis orbits, gear elementsin fixed relation with said operating element and bed frame, lever meanspivoted to said base frame in eccentric relation with said operatingelement and rising adjacent the latter to link connection of its upperend with said axis, means on said base frame engaging said latter levermeans to limit arcuate travel thereof, a compound gear element rotatablycarried by the upper end of said latter means in meshing relation withboth gear elements carried by the operating element and bed frame andoperable to transmit rotation of the former to effect rotation of thelatter about its axis, stop means positively operable to limit relativetravel between said gear elements, an arcuate guide fixedly carried bysaid last named lever means in concentric relation with said operatingelement, and actuating means in fixed relation with the gear elementcarried by said operating element engaged within and adapted to traversesaid guide means to end contact therewith adjacent one limit of the bedframe actuation for operation of said latter lever means to effecttravel of said axis.

ELMER H. BRIDENBAUGH,

